Vulnerability Details : CVE-2021-30936
A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-30936
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-30936
0.67%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-30936
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-30936
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The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-30936
-
https://www.debian.org/security/2022/dsa-5060
Debian -- Security Information -- DSA-5060-1 webkit2gtkIssue Tracking;Third Party Advisory
-
https://www.debian.org/security/2022/dsa-5061
Debian -- Security Information -- DSA-5061-1 wpewebkitIssue Tracking;Third Party Advisory
-
https://support.apple.com/en-us/HT212975
About the security content of watchOS 8.3 - Apple SupportVendor Advisory
-
https://support.apple.com/en-us/HT212978
About the security content of macOS Monterey 12.1 - Apple SupportVendor Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
[SECURITY] Fedora 35 Update: webkit2gtk3-2.34.4-2.fc35 - package-announce - Fedora Mailing-ListsIssue Tracking;Mailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
[SECURITY] Fedora 34 Update: webkit2gtk3-2.34.4-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://support.apple.com/en-us/HT212982
About the security content of Safari 15.2 - Apple SupportVendor Advisory
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http://www.openwall.com/lists/oss-security/2022/01/21/2
oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2022-0001Issue Tracking;Mailing List;Third Party Advisory
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https://support.apple.com/en-us/HT212976
About the security content of iOS 15.2 and iPadOS 15.2 - Apple SupportVendor Advisory
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https://support.apple.com/en-us/HT212980
About the security content of tvOS 15.2 - Apple SupportVendor Advisory
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